./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 12:13:14,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:13:14,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:13:14,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:13:14,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:13:14,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:13:14,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:13:14,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:13:14,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:13:14,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:13:14,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:13:14,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:13:14,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:13:14,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:13:14,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:13:14,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:13:14,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:13:14,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:13:14,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:13:14,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:13:14,903 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:13:14,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:13:14,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:13:14,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:13:14,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:13:14,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:13:14,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:13:14,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:13:14,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:13:14,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:13:14,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:13:14,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:13:14,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:13:14,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:13:14,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:13:14,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:13:14,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:13:14,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:13:14,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:13:14,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:13:14,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:13:14,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:13:14,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:13:14,983 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:13:14,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:13:14,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:13:14,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:13:14,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:13:14,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:13:14,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:13:14,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:13:14,986 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:13:14,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:13:14,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:13:14,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:13:14,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:13:14,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:13:14,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:13:14,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:13:14,988 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:13:14,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:13:14,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:13:14,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:13:14,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:13:14,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:13:14,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:13:14,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:13:14,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:13:14,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:13:14,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:13:14,990 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:13:14,990 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:13:14,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:13:14,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2022-07-12 12:13:15,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:13:15,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:13:15,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:13:15,502 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:13:15,503 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:13:15,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-07-12 12:13:15,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a6c5f98e/76c19d50a7d149e1ba98ec99df920747/FLAG7e4d97ddd [2022-07-12 12:13:16,477 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:13:16,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-07-12 12:13:16,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a6c5f98e/76c19d50a7d149e1ba98ec99df920747/FLAG7e4d97ddd [2022-07-12 12:13:16,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a6c5f98e/76c19d50a7d149e1ba98ec99df920747 [2022-07-12 12:13:16,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:13:16,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:13:16,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:13:16,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:13:16,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:13:16,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:13:16" (1/1) ... [2022-07-12 12:13:16,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb1e888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:13:16, skipping insertion in model container [2022-07-12 12:13:16,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:13:16" (1/1) ... [2022-07-12 12:13:16,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:13:16,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:13:17,917 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-07-12 12:13:18,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:13:18,147 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:13:18,454 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: HeapLValues must be converted to RValue before their value can be queried. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:517) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-12 12:13:18,464 INFO L158 Benchmark]: Toolchain (without parser) took 1888.61ms. Allocated memory was 92.3MB in the beginning and 123.7MB in the end (delta: 31.5MB). Free memory was 46.6MB in the beginning and 66.5MB in the end (delta: -19.9MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. [2022-07-12 12:13:18,465 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 12:13:18,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1883.04ms. Allocated memory was 92.3MB in the beginning and 123.7MB in the end (delta: 31.5MB). Free memory was 46.4MB in the beginning and 66.5MB in the end (delta: -20.1MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. [2022-07-12 12:13:18,470 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1883.04ms. Allocated memory was 92.3MB in the beginning and 123.7MB in the end (delta: 31.5MB). Free memory was 46.4MB in the beginning and 66.5MB in the end (delta: -20.1MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 12:13:21,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:13:21,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:13:21,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:13:21,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:13:21,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:13:21,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:13:21,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:13:21,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:13:21,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:13:21,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:13:21,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:13:21,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:13:21,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:13:21,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:13:21,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:13:21,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:13:21,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:13:21,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:13:21,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:13:21,184 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:13:21,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:13:21,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:13:21,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:13:21,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:13:21,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:13:21,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:13:21,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:13:21,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:13:21,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:13:21,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:13:21,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:13:21,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:13:21,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:13:21,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:13:21,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:13:21,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:13:21,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:13:21,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:13:21,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:13:21,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:13:21,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:13:21,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-12 12:13:21,263 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:13:21,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:13:21,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:13:21,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:13:21,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:13:21,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:13:21,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:13:21,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:13:21,265 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:13:21,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:13:21,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:13:21,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:13:21,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:13:21,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:13:21,266 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 12:13:21,266 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 12:13:21,266 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 12:13:21,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:13:21,266 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:13:21,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:13:21,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:13:21,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:13:21,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:13:21,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:13:21,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:13:21,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:13:21,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:13:21,268 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 12:13:21,268 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 12:13:21,268 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:13:21,268 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:13:21,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:13:21,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 12:13:21,268 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2022-07-12 12:13:21,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:13:21,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:13:21,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:13:21,740 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:13:21,741 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:13:21,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-07-12 12:13:21,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6cb8d8c/78de6a9c05694c2e8a38f6d86ddeade4/FLAG6c01f10f6 [2022-07-12 12:13:22,604 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:13:22,604 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-07-12 12:13:22,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6cb8d8c/78de6a9c05694c2e8a38f6d86ddeade4/FLAG6c01f10f6 [2022-07-12 12:13:22,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6cb8d8c/78de6a9c05694c2e8a38f6d86ddeade4 [2022-07-12 12:13:22,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:13:22,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:13:22,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:13:22,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:13:22,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:13:22,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:13:22" (1/1) ... [2022-07-12 12:13:22,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b76e0c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:13:22, skipping insertion in model container [2022-07-12 12:13:22,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:13:22" (1/1) ... [2022-07-12 12:13:22,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:13:22,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:13:23,733 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-07-12 12:13:23,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:13:23,833 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-12 12:13:23,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:13:24,061 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-07-12 12:13:24,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:13:24,106 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:13:24,392 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-07-12 12:13:24,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:13:24,495 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:13:24,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:13:24 WrapperNode [2022-07-12 12:13:24,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:13:24,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:13:24,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:13:24,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:13:24,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:13:24" (1/1) ... [2022-07-12 12:13:24,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:13:24" (1/1) ... [2022-07-12 12:13:24,688 INFO L137 Inliner]: procedures = 206, calls = 979, calls flagged for inlining = 91, calls inlined = 82, statements flattened = 2401 [2022-07-12 12:13:24,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:13:24,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:13:24,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:13:24,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:13:24,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:13:24" (1/1) ... [2022-07-12 12:13:24,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:13:24" (1/1) ... [2022-07-12 12:13:24,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:13:24" (1/1) ... [2022-07-12 12:13:24,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:13:24" (1/1) ... [2022-07-12 12:13:24,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:13:24" (1/1) ... [2022-07-12 12:13:24,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:13:24" (1/1) ... [2022-07-12 12:13:24,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:13:24" (1/1) ... [2022-07-12 12:13:24,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:13:24,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:13:24,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:13:24,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:13:24,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:13:24" (1/1) ... [2022-07-12 12:13:24,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:13:24,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:13:24,892 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 12:13:24,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 12:13:24,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-12 12:13:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-12 12:13:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-12 12:13:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 12:13:24,928 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_exit [2022-07-12 12:13:24,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_exit [2022-07-12 12:13:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-07-12 12:13:24,929 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-07-12 12:13:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:13:24,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:13:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_report [2022-07-12 12:13:24,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_report [2022-07-12 12:13:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-07-12 12:13:24,930 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-07-12 12:13:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-12 12:13:24,930 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-12 12:13:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:13:24,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:13:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-12 12:13:24,931 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-12 12:13:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_rfk_state [2022-07-12 12:13:24,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_rfk_state [2022-07-12 12:13:24,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:13:24,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:13:24,932 INFO L130 BoogieDeclarations]: Found specification of procedure read_ec_data [2022-07-12 12:13:24,932 INFO L138 BoogieDeclarations]: Found implementation of procedure read_ec_data [2022-07-12 12:13:24,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-12 12:13:24,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-12 12:13:24,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:13:24,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-12 12:13:24,933 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-07-12 12:13:24,933 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-07-12 12:13:24,933 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_touchpad_state [2022-07-12 12:13:24,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_touchpad_state [2022-07-12 12:13:24,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:13:24,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-12 12:13:24,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 12:13:24,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-12 12:13:24,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-12 12:13:24,934 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-12 12:13:24,934 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-12 12:13:24,935 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_init [2022-07-12 12:13:24,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_init [2022-07-12 12:13:24,935 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_evaluate_integer [2022-07-12 12:13:24,935 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_evaluate_integer [2022-07-12 12:13:24,935 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-07-12 12:13:24,935 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-07-12 12:13:24,936 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_notify [2022-07-12 12:13:24,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_notify [2022-07-12 12:13:24,936 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-12 12:13:24,936 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-12 12:13:24,936 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_destroy [2022-07-12 12:13:24,936 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_destroy [2022-07-12 12:13:24,937 INFO L130 BoogieDeclarations]: Found specification of procedure backlight_update_status [2022-07-12 12:13:24,937 INFO L138 BoogieDeclarations]: Found implementation of procedure backlight_update_status [2022-07-12 12:13:24,937 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-07-12 12:13:24,937 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-07-12 12:13:24,937 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_add [2022-07-12 12:13:24,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_add [2022-07-12 12:13:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-12 12:13:24,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-12 12:13:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_update_status [2022-07-12 12:13:24,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_update_status [2022-07-12 12:13:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-12 12:13:24,938 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-12 12:13:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_init_sw_state [2022-07-12 12:13:24,939 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_init_sw_state [2022-07-12 12:13:24,939 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 12:13:24,939 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 12:13:24,939 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-07-12 12:13:24,939 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-07-12 12:13:24,939 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-07-12 12:13:24,940 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-07-12 12:13:24,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-12 12:13:24,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-12 12:13:24,940 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_get_brightness [2022-07-12 12:13:24,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_get_brightness [2022-07-12 12:13:24,940 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_unregister_rfkill [2022-07-12 12:13:24,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_unregister_rfkill [2022-07-12 12:13:24,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:13:24,941 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2022-07-12 12:13:24,941 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2022-07-12 12:13:24,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:13:24,941 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcr [2022-07-12 12:13:24,942 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcr [2022-07-12 12:13:24,942 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcw [2022-07-12 12:13:24,942 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcw [2022-07-12 12:13:24,942 INFO L130 BoogieDeclarations]: Found specification of procedure sparse_keymap_free [2022-07-12 12:13:24,942 INFO L138 BoogieDeclarations]: Found implementation of procedure sparse_keymap_free [2022-07-12 12:13:24,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:13:24,943 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_resume [2022-07-12 12:13:24,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_resume [2022-07-12 12:13:24,943 INFO L130 BoogieDeclarations]: Found specification of procedure write_ec_cmd [2022-07-12 12:13:24,943 INFO L138 BoogieDeclarations]: Found implementation of procedure write_ec_cmd [2022-07-12 12:13:24,943 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_platform_exit [2022-07-12 12:13:24,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_platform_exit [2022-07-12 12:13:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_debugfs_exit [2022-07-12 12:13:24,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_debugfs_exit [2022-07-12 12:13:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:13:24,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:13:25,409 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:13:25,413 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:13:46,946 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:13:46,972 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:13:46,973 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 12:13:46,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:13:46 BoogieIcfgContainer [2022-07-12 12:13:46,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:13:46,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:13:46,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:13:46,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:13:46,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:13:22" (1/3) ... [2022-07-12 12:13:46,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cde5c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:13:46, skipping insertion in model container [2022-07-12 12:13:46,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:13:24" (2/3) ... [2022-07-12 12:13:46,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cde5c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:13:46, skipping insertion in model container [2022-07-12 12:13:46,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:13:46" (3/3) ... [2022-07-12 12:13:46,990 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-07-12 12:13:47,004 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:13:47,005 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:13:47,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:13:47,099 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@39787f34, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4a4ec44d [2022-07-12 12:13:47,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:13:47,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 700 states, 543 states have (on average 1.4548802946593002) internal successors, (790), 562 states have internal predecessors, (790), 116 states have call successors, (116), 39 states have call predecessors, (116), 39 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) [2022-07-12 12:13:47,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-12 12:13:47,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:13:47,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:13:47,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:13:47,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:13:47,140 INFO L85 PathProgramCache]: Analyzing trace with hash -750438681, now seen corresponding path program 1 times [2022-07-12 12:13:47,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:13:47,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343283020] [2022-07-12 12:13:47,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:13:47,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:13:47,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:13:47,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:13:47,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 12:13:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:48,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:13:48,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:13:48,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:13:48,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:13:48,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:13:48,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343283020] [2022-07-12 12:13:48,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343283020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:13:48,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:13:48,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:13:48,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309706379] [2022-07-12 12:13:48,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:13:48,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:13:48,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:13:48,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:13:48,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:13:48,826 INFO L87 Difference]: Start difference. First operand has 700 states, 543 states have (on average 1.4548802946593002) internal successors, (790), 562 states have internal predecessors, (790), 116 states have call successors, (116), 39 states have call predecessors, (116), 39 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:13:50,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:13:51,345 INFO L93 Difference]: Finished difference Result 2070 states and 3094 transitions. [2022-07-12 12:13:51,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:13:51,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-12 12:13:51,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:13:51,377 INFO L225 Difference]: With dead ends: 2070 [2022-07-12 12:13:51,377 INFO L226 Difference]: Without dead ends: 1369 [2022-07-12 12:13:51,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:13:51,395 INFO L413 NwaCegarLoop]: 1121 mSDtfsCounter, 971 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:13:51,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 2119 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 12:13:51,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-07-12 12:13:51,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1365. [2022-07-12 12:13:51,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1063 states have (on average 1.451552210724365) internal successors, (1543), 1091 states have internal predecessors, (1543), 225 states have call successors, (225), 77 states have call predecessors, (225), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-12 12:13:51,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1986 transitions. [2022-07-12 12:13:51,538 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1986 transitions. Word has length 22 [2022-07-12 12:13:51,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:13:51,539 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1986 transitions. [2022-07-12 12:13:51,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:13:51,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1986 transitions. [2022-07-12 12:13:51,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-12 12:13:51,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:13:51,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:13:51,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 12:13:51,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:13:51,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:13:51,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:13:51,764 INFO L85 PathProgramCache]: Analyzing trace with hash 577706747, now seen corresponding path program 1 times [2022-07-12 12:13:51,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:13:51,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299746507] [2022-07-12 12:13:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:13:51,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:13:51,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:13:51,776 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:13:51,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 12:13:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:52,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:13:52,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:13:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:13:52,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:13:52,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:13:52,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299746507] [2022-07-12 12:13:52,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299746507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:13:52,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:13:52,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:13:52,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085463660] [2022-07-12 12:13:52,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:13:52,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:13:52,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:13:53,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:13:53,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:13:53,000 INFO L87 Difference]: Start difference. First operand 1365 states and 1986 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:13:53,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:13:53,244 INFO L93 Difference]: Finished difference Result 1391 states and 2018 transitions. [2022-07-12 12:13:53,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:13:53,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-07-12 12:13:53,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:13:53,251 INFO L225 Difference]: With dead ends: 1391 [2022-07-12 12:13:53,252 INFO L226 Difference]: Without dead ends: 1378 [2022-07-12 12:13:53,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:13:53,253 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 1003 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:13:53,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 1039 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 12:13:53,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2022-07-12 12:13:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1365. [2022-07-12 12:13:53,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1063 states have (on average 1.4506114769520226) internal successors, (1542), 1091 states have internal predecessors, (1542), 225 states have call successors, (225), 77 states have call predecessors, (225), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-12 12:13:53,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1985 transitions. [2022-07-12 12:13:53,301 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1985 transitions. Word has length 25 [2022-07-12 12:13:53,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:13:53,301 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1985 transitions. [2022-07-12 12:13:53,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:13:53,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1985 transitions. [2022-07-12 12:13:53,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-12 12:13:53,303 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:13:53,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:13:53,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 12:13:53,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:13:53,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:13:53,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:13:53,524 INFO L85 PathProgramCache]: Analyzing trace with hash 634965049, now seen corresponding path program 1 times [2022-07-12 12:13:53,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:13:53,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439694655] [2022-07-12 12:13:53,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:13:53,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:13:53,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:13:53,529 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:13:53,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 12:13:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:54,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:13:54,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:13:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:13:55,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:13:55,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:13:55,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439694655] [2022-07-12 12:13:55,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439694655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:13:55,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:13:55,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:13:55,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545968615] [2022-07-12 12:13:55,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:13:55,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:13:55,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:13:55,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:13:55,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:13:55,337 INFO L87 Difference]: Start difference. First operand 1365 states and 1985 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:13:57,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:57,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:13:57,846 INFO L93 Difference]: Finished difference Result 1367 states and 1986 transitions. [2022-07-12 12:13:57,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:13:57,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-07-12 12:13:57,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:13:57,854 INFO L225 Difference]: With dead ends: 1367 [2022-07-12 12:13:57,854 INFO L226 Difference]: Without dead ends: 1364 [2022-07-12 12:13:57,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:13:57,864 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 984 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:13:57,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 1005 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 12:13:57,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-07-12 12:13:57,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2022-07-12 12:13:57,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1063 states have (on average 1.4496707431796803) internal successors, (1541), 1090 states have internal predecessors, (1541), 224 states have call successors, (224), 77 states have call predecessors, (224), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-12 12:13:57,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1983 transitions. [2022-07-12 12:13:57,923 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1983 transitions. Word has length 25 [2022-07-12 12:13:57,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:13:57,923 INFO L495 AbstractCegarLoop]: Abstraction has 1364 states and 1983 transitions. [2022-07-12 12:13:57,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:13:57,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1983 transitions. [2022-07-12 12:13:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-12 12:13:57,926 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:13:57,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:13:57,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-12 12:13:58,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:13:58,148 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:13:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:13:58,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1791173724, now seen corresponding path program 1 times [2022-07-12 12:13:58,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:13:58,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175543890] [2022-07-12 12:13:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:13:58,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:13:58,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:13:58,156 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:13:58,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 12:13:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:59,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 1179 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:13:59,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:13:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:13:59,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:13:59,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:13:59,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175543890] [2022-07-12 12:13:59,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175543890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:13:59,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:13:59,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:13:59,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449804998] [2022-07-12 12:13:59,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:13:59,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:13:59,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:13:59,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:13:59,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:13:59,982 INFO L87 Difference]: Start difference. First operand 1364 states and 1983 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:14:02,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:14:02,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:14:02,258 INFO L93 Difference]: Finished difference Result 1366 states and 1984 transitions. [2022-07-12 12:14:02,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:14:02,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-07-12 12:14:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:14:02,266 INFO L225 Difference]: With dead ends: 1366 [2022-07-12 12:14:02,266 INFO L226 Difference]: Without dead ends: 1363 [2022-07-12 12:14:02,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:14:02,271 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 981 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:14:02,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1003 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 12:14:02,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2022-07-12 12:14:02,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1363. [2022-07-12 12:14:02,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1063 states have (on average 1.4487300094073376) internal successors, (1540), 1089 states have internal predecessors, (1540), 223 states have call successors, (223), 77 states have call predecessors, (223), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-12 12:14:02,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1981 transitions. [2022-07-12 12:14:02,322 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1981 transitions. Word has length 26 [2022-07-12 12:14:02,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:14:02,322 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 1981 transitions. [2022-07-12 12:14:02,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:14:02,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1981 transitions. [2022-07-12 12:14:02,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-12 12:14:02,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:14:02,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:14:02,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-12 12:14:02,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:14:02,548 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:14:02,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:14:02,548 INFO L85 PathProgramCache]: Analyzing trace with hash 307940508, now seen corresponding path program 1 times [2022-07-12 12:14:02,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:14:02,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991283737] [2022-07-12 12:14:02,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:14:02,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:14:02,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:14:02,552 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:14:02,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-12 12:14:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:14:03,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:14:03,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:14:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:14:04,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:14:04,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:14:04,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991283737] [2022-07-12 12:14:04,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991283737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:14:04,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:14:04,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:14:04,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097921752] [2022-07-12 12:14:04,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:14:04,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:14:04,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:14:04,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:14:04,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:14:04,444 INFO L87 Difference]: Start difference. First operand 1363 states and 1981 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:14:06,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:14:07,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:14:07,003 INFO L93 Difference]: Finished difference Result 1365 states and 1982 transitions. [2022-07-12 12:14:07,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:14:07,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-12 12:14:07,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:14:07,012 INFO L225 Difference]: With dead ends: 1365 [2022-07-12 12:14:07,012 INFO L226 Difference]: Without dead ends: 1362 [2022-07-12 12:14:07,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:14:07,015 INFO L413 NwaCegarLoop]: 1001 mSDtfsCounter, 978 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:14:07,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 1001 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 12:14:07,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-07-12 12:14:07,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1362. [2022-07-12 12:14:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1063 states have (on average 1.4477892756349953) internal successors, (1539), 1088 states have internal predecessors, (1539), 222 states have call successors, (222), 77 states have call predecessors, (222), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-12 12:14:07,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1979 transitions. [2022-07-12 12:14:07,062 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1979 transitions. Word has length 27 [2022-07-12 12:14:07,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:14:07,062 INFO L495 AbstractCegarLoop]: Abstraction has 1362 states and 1979 transitions. [2022-07-12 12:14:07,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:14:07,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1979 transitions. [2022-07-12 12:14:07,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-12 12:14:07,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:14:07,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:14:07,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-12 12:14:07,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:14:07,288 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:14:07,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:14:07,288 INFO L85 PathProgramCache]: Analyzing trace with hash 955977127, now seen corresponding path program 1 times [2022-07-12 12:14:07,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:14:07,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28948550] [2022-07-12 12:14:07,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:14:07,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:14:07,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:14:07,292 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:14:07,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-12 12:14:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:14:08,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:14:08,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:14:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:14:09,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:14:09,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:14:09,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28948550] [2022-07-12 12:14:09,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28948550] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:14:09,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:14:09,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:14:09,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909796618] [2022-07-12 12:14:09,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:14:09,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:14:09,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:14:09,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:14:09,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:14:09,452 INFO L87 Difference]: Start difference. First operand 1362 states and 1979 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:14:11,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:14:11,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:14:11,883 INFO L93 Difference]: Finished difference Result 1364 states and 1980 transitions. [2022-07-12 12:14:11,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:14:11,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-07-12 12:14:11,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:14:11,892 INFO L225 Difference]: With dead ends: 1364 [2022-07-12 12:14:11,893 INFO L226 Difference]: Without dead ends: 1361 [2022-07-12 12:14:11,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:14:11,895 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 975 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:14:11,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 999 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 12:14:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2022-07-12 12:14:11,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2022-07-12 12:14:11,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1063 states have (on average 1.4468485418626529) internal successors, (1538), 1087 states have internal predecessors, (1538), 221 states have call successors, (221), 77 states have call predecessors, (221), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-12 12:14:11,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1977 transitions. [2022-07-12 12:14:11,959 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1977 transitions. Word has length 28 [2022-07-12 12:14:11,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:14:11,959 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1977 transitions. [2022-07-12 12:14:11,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:14:11,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1977 transitions. [2022-07-12 12:14:11,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-12 12:14:11,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:14:11,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:14:12,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-12 12:14:12,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:14:12,180 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:14:12,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:14:12,181 INFO L85 PathProgramCache]: Analyzing trace with hash -429719297, now seen corresponding path program 1 times [2022-07-12 12:14:12,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:14:12,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873972592] [2022-07-12 12:14:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:14:12,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:14:12,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:14:12,195 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:14:12,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-12 12:14:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:14:13,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:14:13,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:14:14,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:14:14,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:14:14,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:14:14,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873972592] [2022-07-12 12:14:14,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873972592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:14:14,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:14:14,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:14:14,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447617975] [2022-07-12 12:14:14,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:14:14,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:14:14,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:14:14,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:14:14,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:14:14,915 INFO L87 Difference]: Start difference. First operand 1361 states and 1977 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:14:17,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:14:17,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:14:17,600 INFO L93 Difference]: Finished difference Result 3323 states and 4738 transitions. [2022-07-12 12:14:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:14:17,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-07-12 12:14:17,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:14:17,610 INFO L225 Difference]: With dead ends: 3323 [2022-07-12 12:14:17,610 INFO L226 Difference]: Without dead ends: 1957 [2022-07-12 12:14:17,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:14:17,616 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 941 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:14:17,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1473 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 12:14:17,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2022-07-12 12:14:17,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1951. [2022-07-12 12:14:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1486 states have (on average 1.3909825033647376) internal successors, (2067), 1518 states have internal predecessors, (2067), 330 states have call successors, (330), 135 states have call predecessors, (330), 134 states have return successors, (334), 321 states have call predecessors, (334), 328 states have call successors, (334) [2022-07-12 12:14:17,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 2731 transitions. [2022-07-12 12:14:17,698 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 2731 transitions. Word has length 29 [2022-07-12 12:14:17,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:14:17,698 INFO L495 AbstractCegarLoop]: Abstraction has 1951 states and 2731 transitions. [2022-07-12 12:14:17,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:14:17,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 2731 transitions. [2022-07-12 12:14:17,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-12 12:14:17,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:14:17,706 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:14:17,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-12 12:14:17,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:14:17,924 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:14:17,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:14:17,924 INFO L85 PathProgramCache]: Analyzing trace with hash -278866688, now seen corresponding path program 1 times [2022-07-12 12:14:17,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:14:17,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356971229] [2022-07-12 12:14:17,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:14:17,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:14:17,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:14:17,947 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:14:17,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-12 12:14:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:14:20,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 2898 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:14:20,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:14:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-12 12:14:20,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:14:20,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:14:20,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356971229] [2022-07-12 12:14:20,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356971229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:14:20,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:14:20,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:14:20,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958081406] [2022-07-12 12:14:20,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:14:20,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:14:20,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:14:20,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:14:20,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:14:20,848 INFO L87 Difference]: Start difference. First operand 1951 states and 2731 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-12 12:14:21,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:14:21,456 INFO L93 Difference]: Finished difference Result 4599 states and 6524 transitions. [2022-07-12 12:14:21,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:14:21,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 207 [2022-07-12 12:14:21,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:14:21,474 INFO L225 Difference]: With dead ends: 4599 [2022-07-12 12:14:21,474 INFO L226 Difference]: Without dead ends: 2651 [2022-07-12 12:14:21,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:14:21,482 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 527 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:14:21,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 2005 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 12:14:21,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2022-07-12 12:14:21,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2651. [2022-07-12 12:14:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 2068 states have (on average 1.4361702127659575) internal successors, (2970), 2102 states have internal predecessors, (2970), 410 states have call successors, (410), 173 states have call predecessors, (410), 172 states have return successors, (414), 401 states have call predecessors, (414), 408 states have call successors, (414) [2022-07-12 12:14:21,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3794 transitions. [2022-07-12 12:14:21,596 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3794 transitions. Word has length 207 [2022-07-12 12:14:21,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:14:21,596 INFO L495 AbstractCegarLoop]: Abstraction has 2651 states and 3794 transitions. [2022-07-12 12:14:21,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-12 12:14:21,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3794 transitions. [2022-07-12 12:14:21,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-12 12:14:21,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:14:21,610 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:14:21,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-12 12:14:21,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:14:21,824 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:14:21,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:14:21,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1362685847, now seen corresponding path program 1 times [2022-07-12 12:14:21,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:14:21,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293199843] [2022-07-12 12:14:21,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:14:21,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:14:21,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:14:21,829 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:14:21,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-12 12:14:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:14:24,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:14:24,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:14:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-07-12 12:14:24,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:14:24,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:14:24,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293199843] [2022-07-12 12:14:24,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293199843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:14:24,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:14:24,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:14:24,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081429520] [2022-07-12 12:14:24,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:14:24,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:14:24,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:14:24,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:14:24,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:14:24,829 INFO L87 Difference]: Start difference. First operand 2651 states and 3794 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 12:14:25,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:14:25,366 INFO L93 Difference]: Finished difference Result 5315 states and 7623 transitions. [2022-07-12 12:14:25,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:14:25,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 225 [2022-07-12 12:14:25,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:14:25,381 INFO L225 Difference]: With dead ends: 5315 [2022-07-12 12:14:25,381 INFO L226 Difference]: Without dead ends: 2667 [2022-07-12 12:14:25,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:14:25,392 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 5 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:14:25,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2957 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 12:14:25,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2022-07-12 12:14:25,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 2663. [2022-07-12 12:14:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2078 states have (on average 1.4340712223291627) internal successors, (2980), 2114 states have internal predecessors, (2980), 410 states have call successors, (410), 173 states have call predecessors, (410), 174 states have return successors, (416), 401 states have call predecessors, (416), 408 states have call successors, (416) [2022-07-12 12:14:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3806 transitions. [2022-07-12 12:14:25,504 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3806 transitions. Word has length 225 [2022-07-12 12:14:25,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:14:25,504 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3806 transitions. [2022-07-12 12:14:25,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 12:14:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3806 transitions. [2022-07-12 12:14:25,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-12 12:14:25,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:14:25,514 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:14:25,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-12 12:14:25,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:14:25,724 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:14:25,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:14:25,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1370684821, now seen corresponding path program 1 times [2022-07-12 12:14:25,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:14:25,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873046400] [2022-07-12 12:14:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:14:25,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:14:25,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:14:25,728 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:14:25,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-12 12:14:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:14:28,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-12 12:14:28,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:14:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-07-12 12:14:31,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:14:31,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:14:31,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873046400] [2022-07-12 12:14:31,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873046400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:14:31,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:14:31,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 12:14:31,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957672022] [2022-07-12 12:14:31,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:14:31,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 12:14:31,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:14:31,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 12:14:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:14:31,804 INFO L87 Difference]: Start difference. First operand 2663 states and 3806 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 12:14:34,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:14:34,752 INFO L93 Difference]: Finished difference Result 5371 states and 7707 transitions. [2022-07-12 12:14:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:14:34,753 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) Word has length 225 [2022-07-12 12:14:34,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:14:34,770 INFO L225 Difference]: With dead ends: 5371 [2022-07-12 12:14:34,771 INFO L226 Difference]: Without dead ends: 2711 [2022-07-12 12:14:34,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 12:14:34,784 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 7 mSDsluCounter, 6881 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7868 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 12:14:34,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7868 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 12:14:34,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2022-07-12 12:14:34,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2699. [2022-07-12 12:14:34,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2106 states have (on average 1.4283000949667617) internal successors, (3008), 2142 states have internal predecessors, (3008), 410 states have call successors, (410), 173 states have call predecessors, (410), 182 states have return successors, (452), 409 states have call predecessors, (452), 408 states have call successors, (452) [2022-07-12 12:14:34,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3870 transitions. [2022-07-12 12:14:34,938 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3870 transitions. Word has length 225 [2022-07-12 12:14:34,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:14:34,939 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3870 transitions. [2022-07-12 12:14:34,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 12:14:34,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3870 transitions. [2022-07-12 12:14:34,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-12 12:14:34,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:14:34,952 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:14:35,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-07-12 12:14:35,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:14:35,172 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:14:35,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:14:35,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1261399318, now seen corresponding path program 1 times [2022-07-12 12:14:35,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:14:35,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078450577] [2022-07-12 12:14:35,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:14:35,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:14:35,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:14:35,177 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:14:35,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-12 12:14:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:14:39,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:14:39,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:14:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-07-12 12:14:39,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:14:39,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:14:39,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078450577] [2022-07-12 12:14:39,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078450577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:14:39,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:14:39,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:14:39,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894322973] [2022-07-12 12:14:39,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:14:39,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:14:39,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:14:39,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:14:39,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:14:39,365 INFO L87 Difference]: Start difference. First operand 2699 states and 3870 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 12:14:40,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:14:40,277 INFO L93 Difference]: Finished difference Result 5419 states and 7787 transitions. [2022-07-12 12:14:40,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:14:40,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 228 [2022-07-12 12:14:40,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:14:40,299 INFO L225 Difference]: With dead ends: 5419 [2022-07-12 12:14:40,299 INFO L226 Difference]: Without dead ends: 2723 [2022-07-12 12:14:40,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:14:40,310 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 7 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:14:40,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2953 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 12:14:40,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2022-07-12 12:14:40,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2711. [2022-07-12 12:14:40,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2116 states have (on average 1.4262759924385633) internal successors, (3018), 2152 states have internal predecessors, (3018), 412 states have call successors, (412), 173 states have call predecessors, (412), 182 states have return successors, (454), 411 states have call predecessors, (454), 410 states have call successors, (454) [2022-07-12 12:14:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3884 transitions. [2022-07-12 12:14:40,424 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3884 transitions. Word has length 228 [2022-07-12 12:14:40,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:14:40,424 INFO L495 AbstractCegarLoop]: Abstraction has 2711 states and 3884 transitions. [2022-07-12 12:14:40,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 12:14:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3884 transitions. [2022-07-12 12:14:40,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-12 12:14:40,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:14:40,437 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:14:40,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-12 12:14:40,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:14:40,652 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:14:40,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:14:40,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1945602355, now seen corresponding path program 1 times [2022-07-12 12:14:40,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:14:40,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517861105] [2022-07-12 12:14:40,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:14:40,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:14:40,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:14:40,657 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:14:40,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-12 12:14:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:14:43,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 12:14:43,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:14:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-12 12:14:45,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:14:45,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:14:45,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517861105] [2022-07-12 12:14:45,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517861105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:14:45,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:14:45,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:14:45,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777995967] [2022-07-12 12:14:45,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:14:45,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:14:45,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:14:45,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:14:45,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:14:45,059 INFO L87 Difference]: Start difference. First operand 2711 states and 3884 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 12:14:47,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:14:47,017 INFO L93 Difference]: Finished difference Result 5459 states and 7831 transitions. [2022-07-12 12:14:47,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 12:14:47,018 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 238 [2022-07-12 12:14:47,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:14:47,032 INFO L225 Difference]: With dead ends: 5459 [2022-07-12 12:14:47,032 INFO L226 Difference]: Without dead ends: 2751 [2022-07-12 12:14:47,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:14:47,042 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 5 mSDsluCounter, 3946 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4936 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:14:47,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4936 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 12:14:47,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2022-07-12 12:14:47,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2723. [2022-07-12 12:14:47,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 2128 states have (on average 1.4238721804511278) internal successors, (3030), 2160 states have internal predecessors, (3030), 412 states have call successors, (412), 173 states have call predecessors, (412), 182 states have return successors, (454), 415 states have call predecessors, (454), 410 states have call successors, (454) [2022-07-12 12:14:47,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3896 transitions. [2022-07-12 12:14:47,199 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3896 transitions. Word has length 238 [2022-07-12 12:14:47,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:14:47,200 INFO L495 AbstractCegarLoop]: Abstraction has 2723 states and 3896 transitions. [2022-07-12 12:14:47,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 12:14:47,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3896 transitions. [2022-07-12 12:14:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-12 12:14:47,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:14:47,211 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:14:47,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-12 12:14:47,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:14:47,432 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:14:47,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:14:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash 332974640, now seen corresponding path program 2 times [2022-07-12 12:14:47,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:14:47,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959628604] [2022-07-12 12:14:47,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:14:47,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:14:47,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:14:47,436 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:14:47,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-12 12:14:49,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 12:14:49,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:14:49,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:14:49,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:14:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-12 12:14:50,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:14:50,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:14:50,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959628604] [2022-07-12 12:14:50,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959628604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:14:50,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:14:50,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:14:50,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986882437] [2022-07-12 12:14:50,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:14:50,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:14:50,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:14:50,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:14:50,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:14:50,206 INFO L87 Difference]: Start difference. First operand 2723 states and 3896 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 12:14:52,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:14:52,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:14:52,806 INFO L93 Difference]: Finished difference Result 3548 states and 4926 transitions. [2022-07-12 12:14:52,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:14:52,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 241 [2022-07-12 12:14:52,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:14:52,837 INFO L225 Difference]: With dead ends: 3548 [2022-07-12 12:14:52,838 INFO L226 Difference]: Without dead ends: 2711 [2022-07-12 12:14:52,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:14:52,844 INFO L413 NwaCegarLoop]: 1358 mSDtfsCounter, 403 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:14:52,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 2301 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 12:14:52,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2022-07-12 12:14:52,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2699. [2022-07-12 12:14:52,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2112 states have (on average 1.4247159090909092) internal successors, (3009), 2142 states have internal predecessors, (3009), 408 states have call successors, (408), 172 states have call predecessors, (408), 178 states have return successors, (442), 410 states have call predecessors, (442), 406 states have call successors, (442) [2022-07-12 12:14:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3859 transitions. [2022-07-12 12:14:52,952 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3859 transitions. Word has length 241 [2022-07-12 12:14:52,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:14:52,953 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3859 transitions. [2022-07-12 12:14:52,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 12:14:52,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3859 transitions. [2022-07-12 12:14:52,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-07-12 12:14:52,970 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:14:52,971 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:14:53,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-12 12:14:53,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:14:53,192 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:14:53,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:14:53,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2084236656, now seen corresponding path program 1 times [2022-07-12 12:14:53,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:14:53,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549051163] [2022-07-12 12:14:53,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:14:53,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:14:53,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:14:53,197 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:14:53,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-12 12:14:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:14:59,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 4834 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 12:14:59,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:15:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2022-07-12 12:15:00,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:15:00,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:15:00,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549051163] [2022-07-12 12:15:00,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549051163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:15:00,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:15:00,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:15:00,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500158959] [2022-07-12 12:15:00,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:15:00,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:15:00,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:15:00,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:15:00,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:15:00,086 INFO L87 Difference]: Start difference. First operand 2699 states and 3859 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-12 12:15:02,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:15:02,560 INFO L93 Difference]: Finished difference Result 5443 states and 7785 transitions. [2022-07-12 12:15:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 12:15:02,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 440 [2022-07-12 12:15:02,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:15:02,581 INFO L225 Difference]: With dead ends: 5443 [2022-07-12 12:15:02,581 INFO L226 Difference]: Without dead ends: 2747 [2022-07-12 12:15:02,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:15:02,591 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 20 mSDsluCounter, 2935 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3927 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:15:02,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3927 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 12:15:02,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2022-07-12 12:15:02,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2699. [2022-07-12 12:15:02,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2112 states have (on average 1.4247159090909092) internal successors, (3009), 2142 states have internal predecessors, (3009), 408 states have call successors, (408), 172 states have call predecessors, (408), 178 states have return successors, (442), 410 states have call predecessors, (442), 406 states have call successors, (442) [2022-07-12 12:15:02,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3859 transitions. [2022-07-12 12:15:02,705 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3859 transitions. Word has length 440 [2022-07-12 12:15:02,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:15:02,706 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3859 transitions. [2022-07-12 12:15:02,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-12 12:15:02,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3859 transitions. [2022-07-12 12:15:02,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-07-12 12:15:02,724 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:15:02,724 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:15:02,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-12 12:15:02,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:15:02,944 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:15:02,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:15:02,945 INFO L85 PathProgramCache]: Analyzing trace with hash 735862630, now seen corresponding path program 1 times [2022-07-12 12:15:02,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:15:02,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129461765] [2022-07-12 12:15:02,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:15:02,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:15:02,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:15:02,957 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:15:02,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-12 12:15:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:15:09,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 4846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:15:09,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:15:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2022-07-12 12:15:10,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:15:10,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:15:10,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129461765] [2022-07-12 12:15:10,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129461765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:15:10,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:15:10,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:15:10,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426489580] [2022-07-12 12:15:10,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:15:10,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:15:10,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:15:10,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:15:10,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:15:10,155 INFO L87 Difference]: Start difference. First operand 2699 states and 3859 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-12 12:15:11,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:15:11,112 INFO L93 Difference]: Finished difference Result 5423 states and 7765 transitions. [2022-07-12 12:15:11,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:15:11,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 440 [2022-07-12 12:15:11,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:15:11,155 INFO L225 Difference]: With dead ends: 5423 [2022-07-12 12:15:11,155 INFO L226 Difference]: Without dead ends: 2727 [2022-07-12 12:15:11,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:15:11,172 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 7 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:15:11,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2953 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 12:15:11,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2022-07-12 12:15:11,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 2707. [2022-07-12 12:15:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2707 states, 2120 states have (on average 1.4231132075471697) internal successors, (3017), 2150 states have internal predecessors, (3017), 408 states have call successors, (408), 172 states have call predecessors, (408), 178 states have return successors, (442), 410 states have call predecessors, (442), 406 states have call successors, (442) [2022-07-12 12:15:11,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 3867 transitions. [2022-07-12 12:15:11,362 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 3867 transitions. Word has length 440 [2022-07-12 12:15:11,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:15:11,365 INFO L495 AbstractCegarLoop]: Abstraction has 2707 states and 3867 transitions. [2022-07-12 12:15:11,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-12 12:15:11,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 3867 transitions. [2022-07-12 12:15:11,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-07-12 12:15:11,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:15:11,402 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:15:11,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-12 12:15:11,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:15:11,616 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:15:11,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:15:11,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1782441170, now seen corresponding path program 1 times [2022-07-12 12:15:11,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:15:11,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314433801] [2022-07-12 12:15:11,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:15:11,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:15:11,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:15:11,635 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:15:11,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-12 12:15:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:15:18,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 5022 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 12:15:18,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:15:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-07-12 12:15:20,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:15:20,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:15:20,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314433801] [2022-07-12 12:15:20,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314433801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:15:20,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:15:20,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:15:20,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636224283] [2022-07-12 12:15:20,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:15:20,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:15:20,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:15:20,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:15:20,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:15:20,161 INFO L87 Difference]: Start difference. First operand 2707 states and 3867 transitions. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-12 12:15:21,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:15:21,464 INFO L93 Difference]: Finished difference Result 5459 states and 7801 transitions. [2022-07-12 12:15:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 12:15:21,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 486 [2022-07-12 12:15:21,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:15:21,477 INFO L225 Difference]: With dead ends: 5459 [2022-07-12 12:15:21,478 INFO L226 Difference]: Without dead ends: 2755 [2022-07-12 12:15:21,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:15:21,487 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 6 mSDsluCounter, 3948 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 12:15:21,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4939 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 12:15:21,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2022-07-12 12:15:21,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2719. [2022-07-12 12:15:21,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2132 states have (on average 1.420731707317073) internal successors, (3029), 2158 states have internal predecessors, (3029), 408 states have call successors, (408), 172 states have call predecessors, (408), 178 states have return successors, (442), 414 states have call predecessors, (442), 406 states have call successors, (442) [2022-07-12 12:15:21,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 3879 transitions. [2022-07-12 12:15:21,598 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 3879 transitions. Word has length 486 [2022-07-12 12:15:21,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:15:21,599 INFO L495 AbstractCegarLoop]: Abstraction has 2719 states and 3879 transitions. [2022-07-12 12:15:21,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-12 12:15:21,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 3879 transitions. [2022-07-12 12:15:21,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-07-12 12:15:21,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:15:21,614 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:15:21,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-12 12:15:21,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:15:21,839 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:15:21,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:15:21,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1213120962, now seen corresponding path program 2 times [2022-07-12 12:15:21,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:15:21,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346852921] [2022-07-12 12:15:21,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:15:21,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:15:21,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:15:21,845 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:15:21,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-12 12:15:29,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 12:15:29,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:15:30,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 5056 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-12 12:15:30,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:15:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2022-07-12 12:15:32,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:15:32,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:15:32,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346852921] [2022-07-12 12:15:32,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346852921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:15:32,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:15:32,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:15:32,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636973416] [2022-07-12 12:15:32,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:15:32,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:15:32,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:15:32,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:15:32,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:15:32,617 INFO L87 Difference]: Start difference. First operand 2719 states and 3879 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-12 12:15:33,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:15:33,633 INFO L93 Difference]: Finished difference Result 5491 states and 7837 transitions. [2022-07-12 12:15:33,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:15:33,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) Word has length 492 [2022-07-12 12:15:33,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:15:33,647 INFO L225 Difference]: With dead ends: 5491 [2022-07-12 12:15:33,648 INFO L226 Difference]: Without dead ends: 2775 [2022-07-12 12:15:33,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:15:33,657 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 6 mSDsluCounter, 4951 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5946 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:15:33,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5946 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 12:15:33,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2022-07-12 12:15:33,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2739. [2022-07-12 12:15:33,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 2148 states have (on average 1.4175977653631284) internal successors, (3045), 2170 states have internal predecessors, (3045), 408 states have call successors, (408), 172 states have call predecessors, (408), 182 states have return successors, (450), 422 states have call predecessors, (450), 406 states have call successors, (450) [2022-07-12 12:15:33,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3903 transitions. [2022-07-12 12:15:33,822 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3903 transitions. Word has length 492 [2022-07-12 12:15:33,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:15:33,823 INFO L495 AbstractCegarLoop]: Abstraction has 2739 states and 3903 transitions. [2022-07-12 12:15:33,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-12 12:15:33,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3903 transitions. [2022-07-12 12:15:33,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-07-12 12:15:33,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:15:33,836 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:15:34,065 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forcibly destroying the process [2022-07-12 12:15:34,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-12 12:15:34,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:15:34,070 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:15:34,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:15:34,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1711081881, now seen corresponding path program 3 times [2022-07-12 12:15:34,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:15:34,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540876799] [2022-07-12 12:15:34,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 12:15:34,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:15:34,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:15:34,085 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:15:34,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-12 12:15:40,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-12 12:15:40,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:15:40,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 12:15:40,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:15:41,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-07-12 12:15:41,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:15:41,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:15:41,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540876799] [2022-07-12 12:15:41,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540876799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:15:41,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:15:41,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:15:41,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317602980] [2022-07-12 12:15:41,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:15:41,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:15:41,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:15:41,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:15:41,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:15:41,070 INFO L87 Difference]: Start difference. First operand 2739 states and 3903 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-12 12:15:41,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:15:41,912 INFO L93 Difference]: Finished difference Result 5503 states and 7899 transitions. [2022-07-12 12:15:41,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:15:41,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 501 [2022-07-12 12:15:41,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:15:41,927 INFO L225 Difference]: With dead ends: 5503 [2022-07-12 12:15:41,928 INFO L226 Difference]: Without dead ends: 2767 [2022-07-12 12:15:41,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:15:41,937 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 2 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3924 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 12:15:41,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3924 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 12:15:41,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2022-07-12 12:15:42,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 2755. [2022-07-12 12:15:42,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 2160 states have (on average 1.4152777777777779) internal successors, (3057), 2182 states have internal predecessors, (3057), 408 states have call successors, (408), 172 states have call predecessors, (408), 186 states have return successors, (496), 426 states have call predecessors, (496), 406 states have call successors, (496) [2022-07-12 12:15:42,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3961 transitions. [2022-07-12 12:15:42,044 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3961 transitions. Word has length 501 [2022-07-12 12:15:42,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:15:42,045 INFO L495 AbstractCegarLoop]: Abstraction has 2755 states and 3961 transitions. [2022-07-12 12:15:42,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-12 12:15:42,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3961 transitions. [2022-07-12 12:15:42,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2022-07-12 12:15:42,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:15:42,059 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:15:42,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-12 12:15:42,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:15:42,280 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:15:42,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:15:42,280 INFO L85 PathProgramCache]: Analyzing trace with hash -472021669, now seen corresponding path program 1 times [2022-07-12 12:15:42,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:15:42,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502220244] [2022-07-12 12:15:42,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:15:42,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:15:42,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:15:42,289 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:15:42,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-12 12:15:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:15:50,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 5815 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-12 12:15:50,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:15:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 381 proven. 0 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2022-07-12 12:15:52,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:15:52,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:15:52,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502220244] [2022-07-12 12:15:52,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502220244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:15:52,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:15:52,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:15:52,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716265578] [2022-07-12 12:15:52,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:15:52,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:15:52,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:15:52,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:15:52,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:15:52,719 INFO L87 Difference]: Start difference. First operand 2755 states and 3961 transitions. Second operand has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-12 12:15:53,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:15:53,721 INFO L93 Difference]: Finished difference Result 5551 states and 7985 transitions. [2022-07-12 12:15:53,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:15:53,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) Word has length 553 [2022-07-12 12:15:53,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:15:53,754 INFO L225 Difference]: With dead ends: 5551 [2022-07-12 12:15:53,755 INFO L226 Difference]: Without dead ends: 2799 [2022-07-12 12:15:53,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:15:53,780 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 6 mSDsluCounter, 4962 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5960 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:15:53,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5960 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 12:15:53,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-07-12 12:15:53,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2763. [2022-07-12 12:15:53,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2168 states have (on average 1.4137453874538746) internal successors, (3065), 2186 states have internal predecessors, (3065), 408 states have call successors, (408), 172 states have call predecessors, (408), 186 states have return successors, (496), 430 states have call predecessors, (496), 406 states have call successors, (496) [2022-07-12 12:15:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3969 transitions. [2022-07-12 12:15:53,915 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3969 transitions. Word has length 553 [2022-07-12 12:15:53,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:15:53,916 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 3969 transitions. [2022-07-12 12:15:53,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-12 12:15:53,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3969 transitions. [2022-07-12 12:15:53,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2022-07-12 12:15:53,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:15:53,931 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:15:54,152 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forcibly destroying the process [2022-07-12 12:15:54,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-12 12:15:54,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:15:54,155 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:15:54,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:15:54,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1179334290, now seen corresponding path program 2 times [2022-07-12 12:15:54,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:15:54,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254749484] [2022-07-12 12:15:54,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:15:54,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:15:54,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:15:54,160 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:15:54,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-12 12:15:56,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 12:15:56,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:15:57,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 12:15:57,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:15:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 1321 trivial. 0 not checked. [2022-07-12 12:15:57,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:15:57,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:15:57,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254749484] [2022-07-12 12:15:57,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254749484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:15:57,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:15:57,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:15:57,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363295761] [2022-07-12 12:15:57,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:15:57,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:15:57,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:15:57,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:15:57,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:15:57,931 INFO L87 Difference]: Start difference. First operand 2763 states and 3969 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-12 12:15:58,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:15:58,533 INFO L93 Difference]: Finished difference Result 5559 states and 8159 transitions. [2022-07-12 12:15:58,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:15:58,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 562 [2022-07-12 12:15:58,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:15:58,559 INFO L225 Difference]: With dead ends: 5559 [2022-07-12 12:15:58,559 INFO L226 Difference]: Without dead ends: 2799 [2022-07-12 12:15:58,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:15:58,568 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 2 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:15:58,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4000 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 12:15:58,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-07-12 12:15:58,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2787. [2022-07-12 12:15:58,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2186 states have (on average 1.4103385178408052) internal successors, (3083), 2204 states have internal predecessors, (3083), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 436 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-12 12:15:58,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4005 transitions. [2022-07-12 12:15:58,717 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4005 transitions. Word has length 562 [2022-07-12 12:15:58,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:15:58,718 INFO L495 AbstractCegarLoop]: Abstraction has 2787 states and 4005 transitions. [2022-07-12 12:15:58,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-12 12:15:58,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4005 transitions. [2022-07-12 12:15:58,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2022-07-12 12:15:58,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:15:58,732 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:15:58,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-12 12:15:58,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:15:58,952 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:15:58,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:15:58,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1133548342, now seen corresponding path program 1 times [2022-07-12 12:15:58,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:15:58,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666901795] [2022-07-12 12:15:58,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:15:58,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:15:58,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:15:58,960 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:15:58,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-12 12:16:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:16:07,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 5866 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-12 12:16:07,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:16:12,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-07-12 12:16:12,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:16:12,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:16:12,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666901795] [2022-07-12 12:16:12,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666901795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:16:12,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:16:12,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 12:16:12,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022200370] [2022-07-12 12:16:12,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:16:12,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 12:16:12,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:16:12,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 12:16:12,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-12 12:16:12,236 INFO L87 Difference]: Start difference. First operand 2787 states and 4005 transitions. Second operand has 11 states, 11 states have (on average 18.363636363636363) internal successors, (202), 9 states have internal predecessors, (202), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-12 12:16:18,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:16:18,055 INFO L93 Difference]: Finished difference Result 5819 states and 8399 transitions. [2022-07-12 12:16:18,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 12:16:18,056 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.363636363636363) internal successors, (202), 9 states have internal predecessors, (202), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) Word has length 562 [2022-07-12 12:16:18,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:16:18,076 INFO L225 Difference]: With dead ends: 5819 [2022-07-12 12:16:18,076 INFO L226 Difference]: Without dead ends: 3035 [2022-07-12 12:16:18,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-12 12:16:18,088 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 116 mSDsluCounter, 9284 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 10330 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:16:18,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 10330 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-12 12:16:18,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-07-12 12:16:18,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2799. [2022-07-12 12:16:18,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2198 states have (on average 1.408098271155596) internal successors, (3095), 2212 states have internal predecessors, (3095), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-12 12:16:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 4017 transitions. [2022-07-12 12:16:18,207 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 4017 transitions. Word has length 562 [2022-07-12 12:16:18,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:16:18,208 INFO L495 AbstractCegarLoop]: Abstraction has 2799 states and 4017 transitions. [2022-07-12 12:16:18,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.363636363636363) internal successors, (202), 9 states have internal predecessors, (202), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-12 12:16:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 4017 transitions. [2022-07-12 12:16:18,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2022-07-12 12:16:18,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:16:18,219 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:16:18,441 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forcibly destroying the process [2022-07-12 12:16:18,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-12 12:16:18,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:16:18,448 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:16:18,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:16:18,449 INFO L85 PathProgramCache]: Analyzing trace with hash 776342615, now seen corresponding path program 2 times [2022-07-12 12:16:18,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:16:18,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776405481] [2022-07-12 12:16:18,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:16:18,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:16:18,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:16:18,454 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:16:18,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-12 12:16:21,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 12:16:21,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:16:21,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:16:21,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:16:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 1319 trivial. 0 not checked. [2022-07-12 12:16:21,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:16:21,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:16:21,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776405481] [2022-07-12 12:16:21,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776405481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:16:21,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:16:21,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:16:21,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566924655] [2022-07-12 12:16:21,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:16:21,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:16:21,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:16:21,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:16:21,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:16:21,868 INFO L87 Difference]: Start difference. First operand 2799 states and 4017 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-12 12:16:22,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:16:22,050 INFO L93 Difference]: Finished difference Result 5599 states and 8051 transitions. [2022-07-12 12:16:22,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:16:22,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 559 [2022-07-12 12:16:22,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:16:22,067 INFO L225 Difference]: With dead ends: 5599 [2022-07-12 12:16:22,067 INFO L226 Difference]: Without dead ends: 2803 [2022-07-12 12:16:22,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:16:22,076 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 0 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:16:22,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1970 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 12:16:22,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2022-07-12 12:16:22,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2803. [2022-07-12 12:16:22,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2803 states, 2202 states have (on average 1.4073569482288828) internal successors, (3099), 2216 states have internal predecessors, (3099), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-12 12:16:22,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 4021 transitions. [2022-07-12 12:16:22,263 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 4021 transitions. Word has length 559 [2022-07-12 12:16:22,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:16:22,264 INFO L495 AbstractCegarLoop]: Abstraction has 2803 states and 4021 transitions. [2022-07-12 12:16:22,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-12 12:16:22,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 4021 transitions. [2022-07-12 12:16:22,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2022-07-12 12:16:22,273 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:16:22,274 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:16:22,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-12 12:16:22,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:16:22,496 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:16:22,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:16:22,496 INFO L85 PathProgramCache]: Analyzing trace with hash 330953787, now seen corresponding path program 1 times [2022-07-12 12:16:22,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:16:22,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116280725] [2022-07-12 12:16:22,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:16:22,500 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:16:22,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:16:22,510 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:16:22,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-12 12:16:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:16:31,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 5871 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:16:31,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:16:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2022-07-12 12:16:31,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:16:31,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:16:31,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116280725] [2022-07-12 12:16:31,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116280725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:16:31,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:16:31,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:16:31,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307855623] [2022-07-12 12:16:31,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:16:31,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:16:31,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:16:31,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:16:31,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:16:31,489 INFO L87 Difference]: Start difference. First operand 2803 states and 4021 transitions. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-12 12:16:32,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:16:32,354 INFO L93 Difference]: Finished difference Result 5635 states and 8097 transitions. [2022-07-12 12:16:32,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:16:32,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 561 [2022-07-12 12:16:32,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:16:32,400 INFO L225 Difference]: With dead ends: 5635 [2022-07-12 12:16:32,400 INFO L226 Difference]: Without dead ends: 2835 [2022-07-12 12:16:32,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:16:32,418 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 7 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:16:32,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2956 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 12:16:32,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-07-12 12:16:32,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2811. [2022-07-12 12:16:32,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2210 states have (on average 1.4058823529411764) internal successors, (3107), 2224 states have internal predecessors, (3107), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-12 12:16:32,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4029 transitions. [2022-07-12 12:16:32,595 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4029 transitions. Word has length 561 [2022-07-12 12:16:32,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:16:32,596 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4029 transitions. [2022-07-12 12:16:32,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-12 12:16:32,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4029 transitions. [2022-07-12 12:16:32,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2022-07-12 12:16:32,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:16:32,611 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:16:32,831 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forcibly destroying the process [2022-07-12 12:16:32,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-12 12:16:32,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:16:32,868 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:16:32,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:16:32,868 INFO L85 PathProgramCache]: Analyzing trace with hash 775140032, now seen corresponding path program 1 times [2022-07-12 12:16:32,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:16:32,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112708676] [2022-07-12 12:16:32,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:16:32,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:16:32,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:16:32,876 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:16:32,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-12 12:16:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:16:41,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 5982 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-12 12:16:41,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:16:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 460 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2022-07-12 12:16:45,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:16:45,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:16:45,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112708676] [2022-07-12 12:16:45,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112708676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:16:45,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:16:45,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 12:16:45,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772888079] [2022-07-12 12:16:45,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:16:45,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 12:16:45,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:16:45,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 12:16:45,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:16:45,021 INFO L87 Difference]: Start difference. First operand 2811 states and 4029 transitions. Second operand has 10 states, 10 states have (on average 20.4) internal successors, (204), 8 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-12 12:16:47,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:16:47,866 INFO L93 Difference]: Finished difference Result 5647 states and 8105 transitions. [2022-07-12 12:16:47,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 12:16:47,867 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.4) internal successors, (204), 8 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) Word has length 572 [2022-07-12 12:16:47,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:16:47,943 INFO L225 Difference]: With dead ends: 5647 [2022-07-12 12:16:47,952 INFO L226 Difference]: Without dead ends: 2839 [2022-07-12 12:16:47,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:16:47,972 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 16 mSDsluCounter, 7928 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8924 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:16:47,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 8924 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 12:16:47,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2022-07-12 12:16:48,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 2811. [2022-07-12 12:16:48,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2210 states have (on average 1.4040723981900451) internal successors, (3103), 2224 states have internal predecessors, (3103), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-12 12:16:48,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4025 transitions. [2022-07-12 12:16:48,080 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4025 transitions. Word has length 572 [2022-07-12 12:16:48,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:16:48,081 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4025 transitions. [2022-07-12 12:16:48,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.4) internal successors, (204), 8 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-12 12:16:48,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4025 transitions. [2022-07-12 12:16:48,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-07-12 12:16:48,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:16:48,093 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:16:48,316 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forcibly destroying the process [2022-07-12 12:16:48,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-12 12:16:48,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:16:48,346 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:16:48,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:16:48,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1290265901, now seen corresponding path program 2 times [2022-07-12 12:16:48,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:16:48,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268769427] [2022-07-12 12:16:48,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:16:48,351 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:16:48,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:16:48,356 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:16:48,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-12 12:16:59,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 12:16:59,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:16:59,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 5999 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 12:16:59,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:17:00,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-07-12 12:17:00,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:17:00,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:17:00,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268769427] [2022-07-12 12:17:00,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268769427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:17:00,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:17:00,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:17:00,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543589991] [2022-07-12 12:17:00,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:17:00,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:17:00,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:17:00,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:17:00,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:17:00,253 INFO L87 Difference]: Start difference. First operand 2811 states and 4025 transitions. Second operand has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-12 12:17:01,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:17:01,464 INFO L93 Difference]: Finished difference Result 5683 states and 8149 transitions. [2022-07-12 12:17:01,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 12:17:01,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 575 [2022-07-12 12:17:01,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:17:01,473 INFO L225 Difference]: With dead ends: 5683 [2022-07-12 12:17:01,473 INFO L226 Difference]: Without dead ends: 2875 [2022-07-12 12:17:01,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:17:01,478 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 20 mSDsluCounter, 2950 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3949 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:17:01,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3949 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 12:17:01,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2022-07-12 12:17:01,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2811. [2022-07-12 12:17:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2210 states have (on average 1.4040723981900451) internal successors, (3103), 2224 states have internal predecessors, (3103), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-12 12:17:01,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4025 transitions. [2022-07-12 12:17:01,578 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4025 transitions. Word has length 575 [2022-07-12 12:17:01,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:17:01,579 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4025 transitions. [2022-07-12 12:17:01,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-12 12:17:01,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4025 transitions. [2022-07-12 12:17:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-07-12 12:17:01,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:17:01,589 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:17:01,812 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forcibly destroying the process [2022-07-12 12:17:01,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-12 12:17:01,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:17:01,837 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:17:01,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:17:01,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1466773769, now seen corresponding path program 1 times [2022-07-12 12:17:01,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:17:01,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83661892] [2022-07-12 12:17:01,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:17:01,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:17:01,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:17:01,848 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:17:01,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-12 12:17:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:17:09,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 6021 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:17:09,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:17:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2022-07-12 12:17:09,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:17:09,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:17:09,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83661892] [2022-07-12 12:17:09,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83661892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:17:09,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:17:09,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:17:09,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902861354] [2022-07-12 12:17:09,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:17:09,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:17:09,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:17:09,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:17:09,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:17:09,492 INFO L87 Difference]: Start difference. First operand 2811 states and 4025 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-12 12:17:09,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:17:09,982 INFO L93 Difference]: Finished difference Result 5747 states and 8261 transitions. [2022-07-12 12:17:09,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:17:09,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 575 [2022-07-12 12:17:09,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:17:09,992 INFO L225 Difference]: With dead ends: 5747 [2022-07-12 12:17:09,992 INFO L226 Difference]: Without dead ends: 2939 [2022-07-12 12:17:09,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:17:09,998 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 27 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:17:09,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1963 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 12:17:10,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-07-12 12:17:10,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 2819. [2022-07-12 12:17:10,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2218 states have (on average 1.402614968440036) internal successors, (3111), 2232 states have internal predecessors, (3111), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-12 12:17:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 4033 transitions. [2022-07-12 12:17:10,115 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 4033 transitions. Word has length 575 [2022-07-12 12:17:10,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:17:10,116 INFO L495 AbstractCegarLoop]: Abstraction has 2819 states and 4033 transitions. [2022-07-12 12:17:10,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-12 12:17:10,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 4033 transitions. [2022-07-12 12:17:10,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2022-07-12 12:17:10,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:17:10,127 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:17:10,345 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forcibly destroying the process [2022-07-12 12:17:10,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-07-12 12:17:10,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:17:10,374 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:17:10,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:17:10,375 INFO L85 PathProgramCache]: Analyzing trace with hash -408299781, now seen corresponding path program 1 times [2022-07-12 12:17:10,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:17:10,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911179035] [2022-07-12 12:17:10,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:17:10,379 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:17:10,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:17:10,380 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:17:10,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-12 12:17:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:17:18,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 6071 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:17:18,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:17:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 481 proven. 1 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-07-12 12:17:18,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:17:19,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2022-07-12 12:17:19,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 12:17:19,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911179035] [2022-07-12 12:17:19,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911179035] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:17:19,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 12:17:19,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-12 12:17:19,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744922108] [2022-07-12 12:17:19,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 12:17:19,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:17:19,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 12:17:19,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:17:19,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:17:19,670 INFO L87 Difference]: Start difference. First operand 2819 states and 4033 transitions. Second operand has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 4 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2022-07-12 12:17:21,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:17:21,642 INFO L93 Difference]: Finished difference Result 5891 states and 8481 transitions. [2022-07-12 12:17:21,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:17:21,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 4 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) Word has length 593 [2022-07-12 12:17:21,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:17:21,653 INFO L225 Difference]: With dead ends: 5891 [2022-07-12 12:17:21,653 INFO L226 Difference]: Without dead ends: 3075 [2022-07-12 12:17:21,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1184 GetRequests, 1180 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:17:21,661 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 104 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 3948 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:17:21,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 3948 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 12:17:21,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2022-07-12 12:17:21,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 3075. [2022-07-12 12:17:21,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3075 states, 2402 states have (on average 1.3917568692756037) internal successors, (3343), 2416 states have internal predecessors, (3343), 480 states have call successors, (480), 172 states have call predecessors, (480), 192 states have return successors, (602), 512 states have call predecessors, (602), 478 states have call successors, (602) [2022-07-12 12:17:21,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 4425 transitions. [2022-07-12 12:17:21,789 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 4425 transitions. Word has length 593 [2022-07-12 12:17:21,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:17:21,789 INFO L495 AbstractCegarLoop]: Abstraction has 3075 states and 4425 transitions. [2022-07-12 12:17:21,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 4 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2022-07-12 12:17:21,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 4425 transitions. [2022-07-12 12:17:21,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2022-07-12 12:17:21,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:17:21,803 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:17:22,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-07-12 12:17:22,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 12:17:22,024 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:17:22,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:17:22,024 INFO L85 PathProgramCache]: Analyzing trace with hash 214102459, now seen corresponding path program 2 times [2022-07-12 12:17:22,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 12:17:22,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751489028] [2022-07-12 12:17:22,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:17:22,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 12:17:22,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 12:17:22,030 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 12:17:22,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process